CORE AS-OIL COOLER 7W0205 - Caterpillar

Caterpillar: Confidential Yellow
The information supplied in this service letter may not be valid after the termination date of this program. Do not perform the work outlined in this Service Letter after the termination date without first contacting your Caterpillar product analyst.
This Program must be administered as soon as possible. When reporting the repair, use "PI3892" as the Part Number, "7751" as the Group Number, "56" as the Warranty Claim Description Code and "T" as the SIMS Description Code. Exception: If the repair is done after failure, use "PI3892" as the Part Number, "7751" as the Group Number, "96" as the Warranty Claim Description Code, and "Z" as the SIMS Description Code.
Completion Date
December 31, 1996Termination Date
June 30, 1997Problem
In certain 3612 and 3616 Marine Engine applications the 7W1632 Crankshaft Oil Plug may become loose and cause a loss of oil pressure at the crankshaft rod journal.
Affected Product
Model & Identification Number
3612 (9RC29, 9RC31, 9RC34, 9RC35, 9RC49, 9RC52, 9RC53, 9RC65, 9RC73, 9RC76, 9RC77, 9RC81 , 9RC87-89, 9RC91, 9RC92, 9RC94-101, 9RC106, 9RC109, 9RC111, 9RC113, 9RC116 , 9RC117, 9RC123-125, 9RC142, 9RC144-146, 9RC151, 9RC152, 9RC157, 9RC189 , 9RC191, 9RC194 9RC2 S9RC18175)
3616 (1FN138-146 1PD42 , 1PD55-58, 1PD73-76, 1PD86-89, 1PD94-97, 1PD144-147, 1PD149, 1PD152 , 1PD153, 1PD155, 1PD166, 1PD180, 1PD189-196, 1PD216, 1PD218, 1PD232-235 , 1PD249)
Parts Needed
No parts are required for this program.
Action Required
See the attached rework procedure.
Owner Notification
U.S. and Canadian owners will receive the attached Owner Notification.
Service Claim Allowances
Allow 6 labor hours for 3612 Engines and 8 labor hours for 3616 Engines.
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
MAKE EVERY EFFORT TO COMPLETE THIS PROGRAM AS SOON AS POSSIBLE.
Attach.(1-Owner Notification)(2-Rework Procedure)Copy Of Owner Notification For U.S. And Canadian Owners
Rework Procedure
The following inspection will need to be performed during the next scheduled oil change or overhaul, whichever comes first.
1. Remove the crankcase side covers on one side of the engine and rotate the crankshaft so that the 7W1632 Crankshaft Plug is accessible for the plug that you are checking.2. Use a torque wrench set to 300 40 N m (220 30 lb ft.) to verify torque. Mark the 7W1632 Oil Plug for location to check for movement while applying torque. If the plug rotates prior to the torque wrench click, proceed as follows:3. Torque the 7W1632 Oil Plug to 300 40 N m (220 30 lb ft.). Record journal location of the loose plug, estimated torque value, engine serial number, and the service meter units on the form provided. This information must be returned to Rick Lofthouse at the Lafayette Large Engine Center before the claim can be processed. Rick may be contacted either by phone (317)448-5310, or fax (317)448-5897.
CRANKSHAFT OIL PLUG INSPECTION
Forward the information to Rick Lofthouse at the Lafayette Large Engine Center. Rick may be contacted by phone at (317)448-5310, or fax (317)448-5897.